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Sonnax 28765-05

10-Clutch Piston

Sonnax 28765-05


Sonnax 28765-05 10-Clutch Piston $37.77
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Estimated ship date 03/27/18 if Ordered Today
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Sonnax 10-Clutch Drum, Hub & Piston Kit
Sonnax 852-28756-15K
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10-Clutch Piston

Sonnax 28765-05 Details

10-Clutch System Parts

Sonnax 10-clutch piston 28765-05 is optimized for Powerglide performance applications and machined specifically for use with Sonnax 10-clutch drums 28756-01 and 28756-08. These drums feature a piston bore that is .060" deeper for greater piston travel than was available from 10-clutch drums 28755-01 and 28755-08 (discontinued).

Using the patented Sonnax 10-clutch drum system, the piston accepts 10 frictions and 10 steels, increasing lockup surface to allow significantly more torque than modified OE drums.

  • Piston holds 10 .060" frictions and 10 .060" thick steels
  • 6061 Forged aluminum piston will not crack at high operating pressure like cast pistons

WARNING: Sonnax 10-clutch pistons and drums should ONLY be used as matched parts. See instructions for details.


Manufacturer's Part Number:

Sonnax invented the original, high-capacity Powerglide 10-clutch drum more than a decade ago. The proven dependability of this patented drum makes it a popular choice among racing enthusiasts.

  • The 10-Clutch System
  • Improves clutch capacity for maximum durability
  • Increased piston travel
  • Excess material removed from high-strength, cast steel drum to reduce rotating mass 6061 Forged aluminum piston will not crack at high operating pressure like cast pistons
  • Forged chromoly steel clutch hub